Changjun Zhou

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Chicago, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Compressible carbonaceous particulate material and method of making...
- Patent number 9,458,703
- Issue date Oct 4, 2016
- Superior Graphite Co.
- Changjun Zhou
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Wellbore fluid testing assembly
- Patent number 9,206,681
- Issue date Dec 8, 2015
- Superior Graphite Co.
- Changjun Zhou
- G01 - MEASURING TESTING
Information Patent Grant
Drilling fluid additive for loss circulation and wellbore strengthe...
- Patent number 8,999,898
- Issue date Apr 7, 2015
- Superior Graphite Co.
- Changjun Zhou
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Cement compositions including resilient graphitic carbon fraction
- Patent number 8,617,309
- Issue date Dec 31, 2013
- Superior Graphite Co.
- Peter Roy Carney
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES

Patents Applicationslast 30 patents

Information Patent Application
COMPRESSIBLE CARBONACEOUS PARTICULATE MATERIAL AND METHOD OF MAKING...
- Publication number 20150184495
- Publication date Jul 2, 2015
- SUPERIOR GRAPHITE CO.
- Changjun Zhou
- C01 - INORGANIC CHEMISTRY
Information Patent Application
DRILLING FLUID ADDITIVE FOR LOSS CIRCULATION AND WELLBORE STRENGTHE...
- Publication number 20140274816
- Publication date Sep 18, 2014
- SUPERIOR GRAPHITE CO.
- Changjun Zhou
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Wellbore Fluid Testing Assembly
- Publication number 20140216149
- Publication date Aug 7, 2014
- SUPERIOR GRAPHITE CO.
- Changjun Zhou
- G01 - MEASURING TESTING